| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5163494 | Organic Geochemistry | 2008 | 5 Pages |
Abstract
Three novel 3-oxygenated CD spiro-triterpenoids were tentatively identified as 13,15-spiro-arbor-9(11)-en-3-one, 3β-methoxy-13,15-spiro-arbor-9(11)-ene and 13,15-spiro-arbor-9(11)-en-3β-ol in solvent extracts of sediments from Lake Valencia. Their proposed origin from higher plants is based on structural precursor/product relationships and characteristics of the age distributions since the latest Pleistocene.
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Authors
Yunping Xu, Rudolf Jaffé, Bernd R.T. Simoneit,